Range Query and Data Structure Contract

[Mkalbani]

Location: contracts/range_queries
Language: Rust (Soroban)
Estimated Time: 7 hours
Difficulty: Medium

Description

Implement efficient range query data structures for on-chain data access with pagination and filtering.

Tasks

• Design data structure
• Implement ordered storage
• Create range queries
• Add filtering logic
• Implement pagination
• Create index structures
• Add statistics queries
• Write comprehensive tests
• Implement gas optimization
• Add batch queries

Acceptance Criteria

• Range queries efficient
• Filtering works correctly
• Pagination functional
• Statistics accurate
• Gas optimized
• All tests pass

[AnnieIj]

@AnnieIj has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hello Maintainer, I would love to work on this issue. Thanks

ℹ️ Repo Maintainers: To accept this application, review their application or assign @AnnieIj to this issue.

[adepoju2006]

@adepoju2006 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

I have experience building scalable backend data APIs. I’ll implement cursor-based pagination with efficient filtering and sorting, validate query parameters, optimize database queries, and add tests for large datasets, edge cases, and stable pagination results.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @adepoju2006 to this issue.

[Babigdk]

@Babigdk has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi Maintainer! I'd like to work on this issue if it's still available.

I have experience building scalable backend APIs with TypeScript/NestJS and designing efficient pagination, filtering, and query layers for data-intensive applications. For this task, I'll implement a flexible pagination system that supports both offset- and cursor-based pagination, along with composable filtering, single- and multi-column sorting, and accurate pagination metadata while keeping the implementation aligned with the existing backend architecture.

I'll prioritize performance by reusing the project's current data-access patterns, optimizing queries where appropriate, and avoiding unnecessary duplication. I'll also add comprehensive tests covering pagination boundaries, cursor navigation, filtering combinations, sorting behavior, metadata accuracy, and edge cases to ensure the feature is reliable and regression-resistant. Before submitting the PR, I'll verify that linting, builds, and the full test suite pass locally, and I'll include "Closes #300" in the PR description.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Babigdk to this issue.

[Joycejay17]

@Joycejay17 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hey there maintainer, I am a software engineer with a lot of blockchain experience. I have read through the Issue description and with my experience in stellar projects can get this delivered ASAP.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Joycejay17 to this issue.

[Lynndabel]

@Lynndabel has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

gm gm Maintainer, I have reviewed the issue description and understand the requirements. Can you assign me this please? ETA: 8hours. Thank you

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Lynndabel to this issue.

[0xNinx]

@0xNinx has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hello Maintainer, I've carefully reviewed the issue description and understand the requirements. Can you assign me this please? ETA: 6hours

ℹ️ Repo Maintainers: To accept this application, review their application or assign @0xNinx to this issue.